Planoqrapm co



L. N. PORTER.

INCUBATOR HEATING SYSTEM. APPLICATION FILED AuG.6. I9I7.' IIEIIEw'ED MAY 6.19I9.

Patent-ed Sept. 2, 1919.

2 SHEETS-SHEET l.

Tll.

Inventor Witeesd\Z9 I! I' I I by 1 E MMM@ Attorneys THE COLUMBIA PLANOGRAPII C0., WASHINGTON. D. C.

L. N. PURTER.

INCUBATOR HEATING SYSTEM.

APPLICATION FILED Auee. 1911. REM-:wao MAY 6,1919.

1 ,3 l 5, 1 5 4 Patented Sept. 2; 1919.

2 SHEETS-SHEET Z Inventor Attorneys Tns PATENT ormoni..

Louis NATHAN PORTER, or BLAIR, NEBRASKA, .AssIeNoR or oNnirALF To JAMES MARION DIXON, or BLAIR, NEBRASKA, y H t INoUBAToR-HRATING SYSTEM.

Specification of Letters Patent.

latentedScpt. 2, 1919.'

Application led August 6, 1917, Serial No. 184,712. Renewed May 6, 1919. Serial No. 295,114.

To all 'wlw/71. t may concern.' y

Be it known that I, LoUIs NATHAN Pon- TnR, a citizen of the United States, residing at Blair, in the county of Washington and State of Nebraska, haveinvented a new and useful Incubator-Heating System, of which the followingis a specification.

The subject of this invention is an incubator heater, and the objects of the invention are first, to provide an` incubator heater which will maintain a uniform, sufficiently moist heat at all times, second, to provide novel and efficient heat distributing means for an incubator, third, to provide a novel water container for moistening the atmosphere in an incubator, fourth, to provide a top for an incubator constructed with heat distributing fines and a radiator, fifth, to provide proper ventilation for an incubator, sixth, to provide a simple and eiiicient incubator heater.

With the foregoing and other objects 1n view, which will appear as the description proceeds, the invention resides in the combination and arrangement of theparts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

One practical embodiment of the invention is shown in the accompanying drawings, wherein z- Figure 1 is a central vertical section of an incubator constructed in accordance with the present invention, parts being in elevation;

Fig. 2 is a cross section on the line 2 2 of Fig. 1, the inner plate of the cover removed; y p

Fig. 3 is a fragmentary sectional view taken on the line 3--3 ofFig. 2;

Fig. f1 is a perspective view of the inner heating tube;

Fig.` 5 is a perspective view of the water container;

Fig. 6 is a perspectiveA view of the outer heater tube. A y

Referring to the drawings by numerals of reference y The incubator consists of supporting legs 1 which are joined by the pieces 2. A tanlr" 3V has lugs 4 projecting from itsends and these lugs rest u on Ithe pieces 2 to support the tank in position between the leg 1i The able and convenient tank is provided with a burner 5 upon which is supported a chimney 6.1

`lnpported by the legs 1 is the body 7 of the incubator. This body may be of any desired shape and constructed of any suitmaterial. As here shown, the body 7 is of cylindrical formation, and is provided` with a bottom 8 in which is formed a central opening 9 through which the chimney "6 is adapted to project and from the edges of which opening the said chimney is spaced;

A frusto conical tube l0 rises from the opening and is supported on arms l1 which radiate from its base and rest upon the floor or bottom 8 of the incubator. Surrounding the tube `10 and spaced therefrom is a water container 12 which rests on the extending arms 11 and which terminate a short distance below the upper end of the tube 10. While the water container 12 maybe of any com vement form it is preferably as here shown, composedof an outer cylindrical wall and an inner frusto conical wall joined at their lower peripheries-` These walls may be in tegral or composed of separate pieces as desired. Surrounding the water container l2, and spaced therefronn'is a cylindrical tube `13 which may be provided with air inlet ports 18 spaced about its lower end.

Supportinglugs 14 extend inwardly from the side walls of the incubator andupon them rests the egg container or tray 15 which. may be made of wire mesh as shown and formed with a flange 16 rising from its outer periphery and a flange or collar 17 rising from `the periphery of a central opening formed in the bottom ofthe tray; As will be seen most clearly in Fig. 1, the collar 17 encircles and is spaced from the outer heater tube 13. It is also to be observed that the outerilange 16 is spaced from the outer wall of the incubator. `The object of this is to prevent the eggs coming in Contact with the too hot heater tube in the one case, and the too cool outer wall in the other.

The incubator in this instance, has a top sector 1% rigidly secured on theV sidewalls and to the straight edge `ofthis sectoris secured, by hinges 19, the lid, `While `any suitable and convenient method of constructing the lid may be employed the saine is here shown as composed of the .segmental pieces 20, and the irregular supplemental piece 21 which, 'when placed. together form the substantiallycircular top provided with open` ings in which may be secured plates of glass 22.` Y Y A groove 24 is formed in the inner surface of thercover plate just described and this Ygroove leads from a depression 24', formed in the tie bar 23 of the piece 21, along the bar and around the cover plate just within the periphery thereof. Discharge ports 25 extend from thisY groove through the cover plate as shown.`

Seated in the depression 24 is a cap 26 which is adapted to receive the upper end of the tube k10 when the cover is closed. This cap 26 has opposed nipples 27 extending radially therefrom, the said nipples lying in the groove 24.

Asbestos packing 28 may be applied to the inner surface of the cover plate to which it is vheld by arsheet metal plate 29. The plate 29 *is of less diameter than the main cover plate and may beL secured thereto by tacks, screws, or otherwise, and isY preferf ablylformed to slightly underlap the open ings to formY a support for the sheets of glass 22. An annular strip 80 of felt or other similar material may be secured to the main cover plate and encircle the plate 29. Y t

While the tie bar 23 is herein described as being an integral part of a section of the cover plategit is to be understood that this bar may be a separate piece either of the form shown and described or it may be formed of a channel piece, or of tubing as is` found most convenient.

A thermostat `31, controlling a lever 82 may be secured tothe lid and control through a rod 33 theY stem 34 of a iiame reducing slide for the purpose of controlling the temperature of the incubator.

The operation of the device is as follows:

VEggs are placed in the tray 15; the tank 3 provided with oil; the water receptacle 12 illed with water; the lid closed and the lamp ignited. Hot gases will rise through the chimneyV 6 to the tube 10. In the tube 10 these gases will be properly mixed with airv drawnl through the opening 9. Air passing through the spaces between the tube 10, water receptacle 12, and tube 13 will be heated by the radiation from the inner tube 10. The water in the water receptacle will also be heated to a sufficient extent to maintain a properzamount of moisture in the atmosphere.

. After passing through the tube 10 the hot gases enter the nipples 27, which project from the cap 26, and pass about through the groove 24 and out of the discharge ports 25. In passing through the groove 24 the hot gases heat the plate 29 which radiates the heat evenly above the eggs.

The temperature of the incubator is controlled by the thermostat in the usual manner.

Having thus described the invention what is claimed as new and sought by Letters Patent, is

1. An incubator heating system, comprising in combination with an incubator chamber and a cover therefor, said cover provided with ducts, and a radiating plate secured to the cover, a cap seated on the cover, nipples on the cap and extending into the ducts, a heat producing element supported below the chamber, a chimney on the heat producing element, a tube surround ing the chimney, a water container surrounding the tube, and a tubular member provided with ports at its lower periphery surrounding the. water container, whereby air is circulated from the chamber through the spaces between the tubes and the water container and to the chamber to meisten the air, the irst mentioned tube extending` into the cap whereby hot gases are directed through the nipples to the ducts to heat the radiating plate.

2. An incubator heating system, comprising in combination with an incubator chamber and a cover therefor, said cover provided with a central depression and ducts leading therefrom, and a radiating plate secured to the cover, a cap in the depression, nipples on the cap and extending into the ducts, a heat producing element supported below the chamber, a chimney on the heating element extending into the chamber, a frusto conical tube having radially extending arms at its lower periphery seated on the floor of the chamber and surrounding the chimney, a. water container seated on the arms and surrounding the frusto conical tube, and a tubular member provided with ports at its lower periphery, surrounding the water container, the said frusto conical tube extending into the cap whereby hot gases are directed .through the nipples to the ducts to heat the radiating plate.

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signa ture in the presence of two witnesses.

LOUIS NATHAN PORTER.

lVitnesses J. M. IIURLEY, GERTRUDE PLETsoH.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

. Washington, D. C.

llO 

